Winding head for filament mounting machines



, July 21, 1931. w, LEDIG 1,815,784

WiNDING HEAD FOR FILAMENT MOUNTING MACHINES Filed April 11, 1928 Inve'nto-fi: Wil lg Ledig,

u/ZZQ/ His A cb o'r neg simplify the working arts essential for the l, formation of the'anchor loops' whi'ch are us-' i 3' Patented'J Y 19 f TPATENT FICE I wrnmr m, or qmnnm, ER ANY, ASSIGNOR TO GENERAL ELECTRIC COMPANY, i l A CORPORATION or NEW YORK g I f wmnmenm roe F LAMENTMO NTING MACHINES a "r 1 Appuafibfifiled April 928,seria1naeeaieaahd a Germany May a, 1927.

' This" invention re lates to filam nt mount ingmachines such. as disclosed in application for U; S patent: Serial No. 243,698,'filed De- 'ceinber 30, 1927 byvLedig and, Loebe for a filament mounting machine relating to a fila- 'ment mounting machine forimaking stems.

x for'ele'ctric incandescent lamps, and in which a rotatable bending headifor' forming eyes or loops inthe anch-or'serves at the :same time to enclose the coiled'filarnent in the anchor loops formed bythebending head. "Inthat fwo'rking position of the machine where the anchor loops .-are formed there are horizonmanymble loop forining slides; corre-' I sponding innumberto the bending heads,-and actuated'both bycontrol levers from a control plate and also byhinged levers from the gear segments ,5 which rotate the bending heads.

The. present i var ants for its object to ually Very small, and at'thei same time avoid anglesat'the hinges of 'several'hinged levers.

vention,v each bending head: has a vvertically reciprocating slide actuated by .the machlne drive and acting at its upper end directly through a cam on the leaf spring which made. Assoon as the reciprocating' slide has risen far enough to. apply the leafspr ng to p the anchor in which the loop is to be made 1t are due to the very precisely controlled 'ver;

tical movement of theslide, the loops on the anchor wires are formed With great accuracy and precision.

vOne example of an embodiment of the in vention is'shown infthe accompanying drawings in which Fig. 1 is an elevation of a bend- ;ing head of a filamentmounting machine; Fig.2 is a horizontal section along the line is rotatably 'bular spindle To thisend, and inaccordance with the in-' presses into engagement'with the bending hea'd'the anchor Wire in which a loop 1s being also acts through a lost motion connection thebending head along the line 3-3; Fig. 4 isfan enlarged endview; Fig. 5 is an enlarged horizontal section of that part of the-bend-J inghead shown inFigurefZ; and Fig. 6 isa 2+2 of 1 3 a vertical sectionof; I

,view'of the lower end of a mount on'whic'h the filament has been mounted by the. anchor bending head. 7

As in the filament mounting machine/of the applicati-on'above identified there is fixed 58 has an inwardly extending radial arm :59 on the inner end of which a loop bending head mounted on a stationaryjtuf 61 and is held'in placeon the spindle by a bracket 62. Each bending head 60 has a longitudinalslot 63 in one side, and. the stationary tubular spindle 61 has aj'c'orresponding longitudinal slot to permit" the introduction of the coiled-filament into the til l" n p bular spindle 61 from the top through the ,1

slot 63 of the bending head. Each bending 'head' is rotated on the tubular spindle' atil'by v a pinion 64 which meshes with a gear segment 65. "The end face of the rotatable bending head 60 has a ratchet tooth groove 83 ofwhich the longitudinally projecting face forms ,a bending shoulder or lug for engaging the anchor'wire 31 which rests on the end face of l k the head and is pressed into the groove of underneath the shoulder by a leaf spring 01-1 which extends across'the c c resilient finger 81 endof the bending head."

YBoth'the application of the leaf springior-l resilient finger 81 and the rotation'of the bending head 60 are,'in accordance with the I invention, controlled by the up and down movement of a reciprocating slide, 113 guidedvertically in the standard 58 and normallydrawn down by aspring ll until its collar 115 restso'n the upper end of its guide 116 on the standard 58. a The upper endof the slide 113 isbent to form a cam 117 overlying the leaf spring 81 as best shown in Fig. 3. Between the cam and the leaf spring '81 is a cam follower 118 pivoted on a pin 119 ona lug w 120 on the standard 58. In the standard 58 10 9 in loop bending position on 'a' table 57 of the machine a radially set standard 58 for each anchorwire31 of thestem 6. Each standard beside the pin 1 19 isa set screw 121, which acts as a stop for the gear segment 65.

The gear segment is rocked on its pivot from the slide 113 through a lost motion connection whichpermits the slide to apply the p g 81 t9 the bending ead beforeth b nd.- ing hea isretated the segment 65. In'the particular sired lostmotion between the slide and the gear segment is obtained because theslide 113 has near the middle a longitudinal slot 122 through which extends an arm 123 of the gear segment 65. -Aspring' 124: connected to c this arm normally holds the gear segment 65 V in contact with the set screw 121' and the he dingthead- 6,0 in such aposition that its sl t 63 s V h top as. hown in igs 1 an Vit'h he s i e 1113 in it lowes or rmal Pee. i n, the s ot 122 s i c a'p e at i-her ee s derable play or l st m ion be tweshtm 1. 3am; the lower d .12 of wh ch acts a a l gte e gage the M 123 and move the segment 65, but only after th slide has ris n ce ain di nc aheve id ntified, When he st m is in the lleepfheh inspesitieh h s m d nah ad of themaehine low red ro the po it Sh wn n dotted line to that shown in' ll has Fig-'1 tefi ntredu e t e coil eme t hangin from th ad of the stem into th tubular-sp ndl s 61 of, the e ding heads. and t. the nie' im p a he n Qftheaheher Wi es 31 heroes and on the p o jeetihg ends efthe bendi heed p n l As. soon as thestem holder and stem have een leweredfiht the position shown. i f ll ine iii Fig-. the l es v 1 the. s and a de e8 egin to rise he ju b e appets-15.2.6. 1 the lower ends of h slid are.

tiered y he central plate .78 which is. by the dr i g mee anie m d t e ierethe. slides are p shed pwar ly in p e oft-he springsll li The cam 117, on the. upper hde e -eh s dey i he upon. g he i'e lewer 1L8 oiiiits pivot and th y nr eesthe und rly g eaf Spring 81 a ns the aheherwir ereing it nto the ratchet inc nt; ef theslide 113; continues gear segment 6 JE$ al ngand w ng about on its rivet. The award increment f: the s de tooth groove; 83 of; the, bending head 60. In this way the anchorwire is held in the groove .3,. hdthuslee ee tethe ending hea Duhgthi nertieh f th mo ement of he lide thebending'head is stationary because oftlie lost motionbetween the slide and the arm.

shortly after the spring 81 presses the anc'hor'intothe groove '83- the bottom or lower shonlder-125 of the slot 122 inthe slide, acting as a lng orabutment, comes in contact Witlit-hearm12z3 so. that astheupward move= hiis causes-e radi l et l ehet he se r s e? hit-i t. 65.1 and-a r ta eh oi the bending hea arrangement illustrated the dc desfli bfidmQre fully in the application- 60 and with the bending of the. anchor wire 31 in the groove 83 into aloop about the coiled filament, which lies in thebore of the tubular spindle 61 of the bending head. As the slide 113 moves downward these movements. nccur in reverse order, the gear seg- 1nentl65 together with the'bending head 60 first returning to their initial position, after which the pressure of the leaf spring 81 on the anchor wire and the end face. ofT-theibend:

tubular spindle having a longitudinal 51915,

a loopfbender rotatable on Sai Spindle and having a corresponding longitudinal slot,

saidbender having a d i g jpin en or retating it and a radial ratchet tooth-groove onits end face, aleaf spring fixed at oneenCl with its free end overlapping the end face of said bender, an actuating slide mounted. to reciprocate verticallyand transversely of said spring, a cam on the upper end of said slide to engage said spring and press its free end agalnst the end face of said loop.

bender, a pivoted gear in mesh with the pin;

ion on said loop bender, anda lost motion connection between said slide and said gear to actuate: said gear from sa d sl de after said cam has engaged said spring;

2. In a machine of the character described,

an anchor wire bending head comprising a tubular spindle havinga longitudinal slot, a loop bender rotatable onsaid spindle. and having a corresponding longitndinal slot, said bender having a driving pinion forrotating it and a radial ratchet tooth groove on its end face, a leaf spring fixed at one end with its free end overlapping the end face of said bender, an actuating slide mounted to reciprocate and having a, cam for pressingthe free end of said spring against'i-he end face of said. bender during "the advance of said slide, and means actuated by said. slide during its advance and while said spring is pressed against the end of said bender for rotating said bender.

3. In a filament mounting machine of the character described, an anchor wire bending head comprising a tubular spindle having a longitudinal slot,'a loop bender rotatable on said spindle and having'a corresponding longitudinal slot, saidbender having in its face a radial ratchet toothgroovaa resilis. ent member movable toward the end face of said loop bender to, hold an. anchorwire in said groove during rotation of said bend.

while maintaining said member in position adjoining said loop bender. P

1 4. In a machine of the character described,

. an anchor wire bending head comprising a groove in its end, ananchor holding member movable along the axis of said loop bender face of said bender. I c c 5. In a loop bending machine, the/combine tion of a rotatably bender having. an end face shaped to grip a wire laid radially of to adjoin its end, andan actuating member movable to hold saidholding member'adjoining the end of said loop benderduring most of its travel and to rotate said bender during a lesserjportion of itstravel and while said holding member adjoins the end said bender and in contact with said face, a

resilient finger movable axiallyof said bend- 9 'bination of a, rotatable bender having an er to oontactfwith said wire iandjhold'it againstsaid face, and means for movingsaid fingerintocontact with said face andfor ro- I tating said bender while maintainingsaid finger in contact withthe face of the bender.

6.In a loop bending machine, thecom end face with a" projecting shoulder to en gage a wire laid onsaid face radially of said bender, a resilientfinger'movable axially of i's'ai-d bender to contact with said face, and

means for moving said finger into contact with said face to hold said wire underneath I said shoulderand for rotating said bender while maintainingsaid finger in contact with the face of the bender. 7

.7. In a loop bender, the combination of a spindle, a bending head mounted to rotate on said spindle and having a face perpendicular to said spindle and through which the I end of said spindleprojec'ts, said face being shaped to engage a wire lying in contact with said faceand across the projectingend of said spindle and to bend saidwire around saidspindle as said head rotates, and means cooperating with said head'to hold said wire in contact withsaid face during rotation of I said head.

8. In a machine ofthe character described,

the combination of a rotatable loop bender having a face shaped to engage an anchor wire laid radially across said face, a finger movable into juxtaposition to said face to hold an anchor wire in engagement With said face during rotation of said loop bender to bend the anchor wire into a loop, an. actuating slide mounted'to reciprocate along an axis transverse to the axis of rotation of said loop bender, and connections between said 100p bend-er, said finger, and said slide for maintaining said finger in juxtaposition with said to rotate about a horizontal axis a face shapedto' engage an anchor wlrelaidi said slide and thereby rotate tion during the remainder across said face,

face of s'aidloop bender and simultaneously 7 rotating said loop bender.

- 9. In a machine of the character described,

bender said face, a finger movable into juxtaposition ment with said face during rotation of said loop bender to bend the anchor Wire into a, loop, an actuating slide mounted to recip-' 1 to said faceto hold an anchor wire in engage- V rotatable loop {bender having a bending rocate along an axis transverse to the axis of rotation'of said loop bender, a driving gear in mesh with sald pinion, a connectlon between said slide and sald driving gear to rotate said driving gear as said slide reciprocates and thereby rotate said loop bender,

and means actuated by said slide to control I the position of said fingers during rotation I of said loop bender.

the combination of a loop bender mounted and having radially across said face, a finger cooperat 10. 'In a machine of the character describeding with said face to hold the anchor wire in engagementwith said face, a vertically movable slide adjacent said loop bender, driving means actuated by said slide during a f portion of its travel to rotatesaid loopbender, and finger controlling means actuated by said slide during a greater portion of its travel to hold said fingerin juxtaposition to said face of said bender.

.11. In a machine of the character described the combination of a loop bender mounted to rotate about a horizontal axis and having a face shaped to engage an anchor wire laid radially across said face, ing withsaid face to hold the anchor wire in engagement with said face,

ing gear for said loop bender mounted in position 'tobe engaged and rotated by said slide near the end of the upward travel of said loop bender, and a cam on said slide to bender prior tothe rotation of said driving gear and to maintain said finger in said posiof the upward travel of said slide. 7 c

112. In a machine of the character described,

the combination of a rotatable loop bender hav-inga face shaped to engage a wire laid a finger movable into juxtaposition to said face, and common actuating WILLY LEDIG.

a vertically mov'-' ableslide adjacent said loop bender, a driva finger cooperat- I I move said finger 1 5 into p'osltion adjoining said face of said loop I 

